## Slack Variable

In an optimization problem, a **slack variable** is a variable that is added to an inequality constraint to transform it to an equality. Introducing a slack variable replaces an inequality constraint with an equality constraint and a nonnegativity constraint.

Read more about Slack Variable.

### Some articles on slack variable:

Linear Programming - Duality - Example

... To each

... To each

**variable**in the primal space corresponds an inequality to satisfy in the dual space, both indexed by output type ... To each inequality to satisfy in the primal space corresponds a**variable**in the dual space, both indexed by input type ... Since each inequality can be replaced by an equality and a**slack variable**, this means each primal**variable**corresponds to a dual**slack variable**, and each dual**variable**corresponds to a primal**slack variable**...### Famous quotes containing the words variable and/or slack:

“There is not so *variable* a thing in nature as a lady’s head-dress.”

—Joseph Addison (1672–1719)

“In marriage, a man becomes *slack* and selfish, and undergoes a fatty degeneration of his moral being.”

—Robert Louis Stevenson (1850–1894)

Main Site Subjects

Related Subjects

Related Phrases

Related Words